Guestion for 5G guys:
What is the typical value for IBLER for PDSCH?
Residual BLER will be lower than 10%, but IBLER, what is the value? Is it 10% usually?
It’s 10%.
We have more flexibility in 5G for link adaption by fine tuning parameters.
It’s strange, in Huawei you cannot modify target BLER for PDSCH, only for PDCCH.
(For PDCCH target bler is 1.5%, in 5G)
5G target BLER for PDCCH can be adjusted as per convenience, but for PDSCH it cannot be adjusted.
I’ve never seen option to configure BLER for PDCCH.
It will change aggregation level for PDCCH.
Seems Huawei very advance in Features.
Does someone try to increase PDSCH IBLER target > 10%?
For LTE, yes.
What is the effect?
Lower quality service.
Do you have an overall evaluation?
MCS and tput marginally increased.
Which layer throughput is increased?
Do you think actual user throughput is increased?
How can MCS and throughput increase with more BLER?
It will marginally improve call drop rate, but throughput will degrade.
By increasing bler target you are giving more time for call to sustain as ack/nack start late.
It will impact more latency see 3GPP TR 36.912 report.
But you can improve call drop rate with t310/n310.
Why changing target bler?
You can only change the IBLER the residual bler will still converge to zero.
No matter how you set the IBLER (initial BLER).
Yes true but up to certain rate as n310 act in correspondence of bler only.
Remember that popular picture for bler with n310.
We set dltargetbler. Don’t have any parameter for residual bler.
Please correct if it’s there for Huawei.
Same for Huawei, you can only control Initial BLER not residual bler
And that IBLER is 10% for PDSCH and 1.5% for PDCCH.